Ultimately, it concluded, sharing the grid is a net benefit for New Hampshire ratepayers — and leaving would, in fact, raise costs. Zeroing in on transmission spendingThe cost of energy contributes to high electricity bills, but it’s not the only factor. There are other opportunities New Hampshire could pursue to drill down on spending by transmission utilities, Harrington said. Focus areas for the department include potential “reforms” to the ancillary services market, capacity market, and how long-term transmission projects are planned, she said. Leveraging federal rebates to increase adoption of heat pumps instead of fuel oil could be one way to immediately lower energy costs for consumers, she said.